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Re: Temporary table vs pl\sql table

From: Johan Eriksson <johan.eriksson_at_bossmedia.se>
Date: Wed, 30 Nov 2005 10:30:38 +0100
Message-Id: <1133343039.4202.1.camel@erijoh.ad.bossmedia.se>


Hi

when reading your post it sounds like you could benefit from using a materialized view instead?

/johan

On Wed, 2005-11-30 at 10:42 +0200, Amihay Gonen wrote:
> Hi , I've a process which need to do a lot of processing (summaries)
> on a large set of data.
>
> The main flow is as follow:
>
> copy the new rows since last run (up to defined row count) to a
> temporary table.
> Run various selects with group by on the temporary table and
> merge them into summary table.
>
> I wander (I will conduct some tests ofcourse ) what type of temporary
> table will be better:
>
> 1) create ... temporary table or ...
> 2) create type test is table of
>
> The first option has more i/o and go throw the buffer cache , but
> doesn't consume a lot of memory
> the second option doesn't has I/O but consume more memory for the PGA.
>
> Any ideas ?
>
>
>

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Received on Wed Nov 30 2005 - 03:32:09 CST

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